Consider the following statements about the Thar Desert: (1) The Thar Desert spans the states of Rajasthan, Gujarat, Punjab, and Haryana. (2) Taanka or kunds are traditional water conservation structures in the Thar Desert. (3) Jaisalmer Fort is a UNESCO World Heritage Site. (4) The Thar Desert receives very high rainfall making it agriculturally rich. Which of the above statements are correct?